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Old 11-28-2005, 21:01   #1 (permalink)
anoldfart2@unlisted.com
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Which Transmission fluid

I got a 1979 F150 with a 400 engine. 4WD pickup.
The transmission is a C6. I am hoing to change the filter and fluid.
I am getting conflicting stories from local parts stores. Do I need
type F fluid, or can I use Mercon III ?

Thanks

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Old 11-28-2005, 23:01   #2 (permalink)
Louis M. Brown
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Re: Which Transmission fluid

On Mon, 28 Nov 2005 22:05:38 -0600, anoldfart2@unlisted.com wrote:

>I got a 1979 F150 with a 400 engine. 4WD pickup.
>The transmission is a C6. I am hoing to change the filter and fluid.
>I am getting conflicting stories from local parts stores. Do I need
>type F fluid, or can I use Mercon III ?
>
>Thanks


Dexron/Mercon type fluid tends to be a somewhat better lubricating
fluid for the C-series of trans.

However, if you want firmer shifts, use type F.

-LMB

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Old 11-29-2005, 05:01   #3 (permalink)
trainfan1
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Re: Which Transmission fluid

anoldfart2@unlisted.com wrote:
> I got a 1979 F150 with a 400 engine. 4WD pickup.
> The transmission is a C6. I am hoing to change the filter and fluid.
> I am getting conflicting stories from local parts stores. Do I need
> type F fluid, or can I use Mercon III ?
>
> Thanks
>




You NEED type F - Dexron is quick & sure death for the C-6.

Rob
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Old 11-29-2005, 05:01   #4 (permalink)
trainfan1
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Re: Which Transmission fluid

Louis M. Brown wrote:
> On Mon, 28 Nov 2005 22:05:38 -0600, anoldfart2@unlisted.com wrote:
>
>
>>I got a 1979 F150 with a 400 engine. 4WD pickup.
>>The transmission is a C6. I am hoing to change the filter and fluid.
>>I am getting conflicting stories from local parts stores. Do I need
>>type F fluid, or can I use Mercon III ?
>>
>>Thanks

>
>
> Dexron/Mercon type fluid tends to be a somewhat better lubricating
> fluid for the C-series of trans.
>
> However, if you want firmer shifts, use type F.
>
> -LMB
>


You NEED type F - Dexron is quick & sure death for the C-6.

Rob
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Old 11-29-2005, 06:01   #5 (permalink)
lugnut
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Re: Which Transmission fluid

On Mon, 28 Nov 2005 22:05:38 -0600, anoldfart2@unlisted.com
wrote:

>I got a 1979 F150 with a 400 engine. 4WD pickup.
>The transmission is a C6. I am hoing to change the filter and fluid.
>I am getting conflicting stories from local parts stores. Do I need
>type F fluid, or can I use Mercon III ?
>
>Thanks



Ford change the clutch disc and fluid spec after the 1976
model year. If the trans is a 1977 up, it should use the
Dexron/Mercon spec fluid. You should also find this on the
dipstick. The current version of this is the Dexron
III/Mercon spec. Do not use the Mercon V spec in the C6.

Lugnut
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Old 11-30-2005, 00:01   #6 (permalink)
anoldfart2@unlisted.com
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Re: Which Transmission fluid

On Tue, 29 Nov 2005 08:46:02 -0500, lugnut <lugnut@bellsouth.net>
wrote:

>On Mon, 28 Nov 2005 22:05:38 -0600, anoldfart2@unlisted.com
>wrote:
>
>>I got a 1979 F150 with a 400 engine. 4WD pickup.
>>The transmission is a C6. I am hoing to change the filter and fluid.
>>I am getting conflicting stories from local parts stores. Do I need
>>type F fluid, or can I use Mercon III ?
>>
>>Thanks

>
>
>Ford change the clutch disc and fluid spec after the 1976
>model year. If the trans is a 1977 up, it should use the
>Dexron/Mercon spec fluid. You should also find this on the
>dipstick. The current version of this is the Dexron
>III/Mercon spec. Do not use the Mercon V spec in the C6.
>
>Lugnut


Thanks to all that replied. The dipstick says to use ESP-M2C138-CJ
What the heck is that?????

Thanks

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Old 11-30-2005, 04:01   #7 (permalink)
SC Tom
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Re: Which Transmission fluid

> The dipstick says to use ESP-M2C138-CJ
> What the heck is that?????
>

Doing a Google search turned up this and 1000's of other hits.

SC Tom


http://www.morrislubricants.co.uk/im...uper%20ATF.pdf
Looks like it's Mercon/ DexronIII.


This is from the Lincoln forum group:
"From the 1979 Continental Mark V Owners Manual - 2nd Printing - 11/78

D7AZ-19582-A FORD ATF ESP-M2C138-CJ, or Dexron II Series D Fluid"



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Old 11-30-2005, 07:01   #8 (permalink)
trainfan1
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Posts: n/a
Re: Which Transmission fluid

lugnut wrote:
> On Mon, 28 Nov 2005 22:05:38 -0600, anoldfart2@unlisted.com
> wrote:
>
>
>>I got a 1979 F150 with a 400 engine. 4WD pickup.
>>The transmission is a C6. I am hoing to change the filter and fluid.
>>I am getting conflicting stories from local parts stores. Do I need
>>type F fluid, or can I use Mercon III ?
>>
>>Thanks

>
>
>
> Ford change the clutch disc and fluid spec after the 1976
> model year.


Holy cats, I did not realize it was that long ago.

Rob

If the trans is a 1977 up, it should use the
> Dexron/Mercon spec fluid. You should also find this on the
> dipstick. The current version of this is the Dexron
> III/Mercon spec. Do not use the Mercon V spec in the C6.
>
> Lugnut

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